宁夏南部旱区坡地不同粮草带比间作种植模式比较  

Different strip intercropping of grain-grass on sloping field in dry areas of south Ningxia

作　　者：路海东[1] 贾志宽[1] 杨宝平[1] 李永平 刘世新 

机构地区：[1]西北农林科技大学农学院,陕西杨陵712100 [2]固原市农科所,宁夏固原756000

出　　处：《生态学报》2010年第21期5941-5948,共8页Acta Ecologica Sinica

基　　金：国家"十一五"科技支撑计划项目(2006BAD28B03)

摘　　要：在宁夏南部旱区15°坡耕地上,于2007年5月至2008年10月连续2a研究了7种不同粮草带状间作(谷子和糜子间作苜蓿)模式与粮食单作(对照处理)模式下的作物产量、形态指标、水分利用效率及水土流失特征。结果表明,同粮食单作相比,4∶4、4∶6、6∶4、6∶6、6∶8、8∶6和8∶8等7个粮(谷子或糜子)草(苜蓿)条带间作种植模式的作物生育后期单株叶面积和单株质量明显增加,作物水分利用效率提高0.99-1.57kg/m3,产量增加3.02%-15.72%,地表径流减少6.86%-58.42%,泥沙流失量减少56.09%-100%。不同粮草带比间作种植模式比较,带距越窄,粮食增产效果和整体水土流失防治效果越佳。尤其是4∶4、4∶6和6∶43种带比间作种植模式的综合效果较好。On 15°sloping field in dry areas of south Ningxia province,the crop yield,morphological index,water use efficiency and soil erosion characteristics were researched about seven different types of strip intercropping of grain-grass （ Millet and Alfalfa） and sloe cropping of grain （ Millet） during May 2007 to October 2008. The results were showed that：Compared with sloe cropping of grain,other seven different types of strip intercropping of grain-grass（ 4∶4,4∶6,6∶4,6∶6,6∶8,8 ∶6,8 ∶8） increased leaf area and quality of single plant significantly. The intercropping of grain-grass patterns increased crop water use efficiency by 0. 99kg/m3 -1. 57kg/m3 and crop yield by 3. 02% -15. 72% ,decreased surface runoff by 6. 86% -58. 42% and sediment runoff by 56. 09% -100%. Among different types of strip intercropping of grain-grass,the strip of intercropping of grain-grass was more narrower,the effects of crop yield increase and soil erosion control was more better. Consolidated comparative results of different intercropping grain-grass patterns was that the three types of 4∶4,4∶6 and 6∶4 were the best intercropping pattern.

关 键 词：粮草间作 坡耕地 产量 水土流失 

分 类 号：S157[农业科学—土壤学]